I just got the M001 a couple of days ago but after doing some research on the Internet and actually "test driven" both of them at local resellers... The performance / software its about the same... BUT ... the M003, has access to USB and larger screen, but what I didnt like of the M003, is that the larger screen comes with a bulkier case, meaning that the frame is really thick and I didnt like that cause it makes the whole device bulkier, thats why I decided to sacrifice screen size and usb port in favor of a slicker design... I know this is a very outdated reply but its just my 2 cents in case someone runs into this topic.